Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Tusk Conservation Awards at The Royal Society on September 12, 2013 in London, England. (Photo by Danny E. Martindale/Getty Images) | Getty

Sporting her signature wavy hair, simple makeup and a fab pair of sequined heels, the Duchess dazzled the crowd alongside husband Prince William, who looked every inch the heir to the throne in a classic tux.

"As you might have gathered, Catherine and I have recently become proud parents – of a baby who has a voice to match any lion's roar!" the proud dad, 31, said to applause, asking that guests pardon the couple's anxiety.

This is actually our first evening out without him, so please excuse us if you see us nervously casting cheeky glances at our mobile phones to check all is well back home."

We predict that sequined clothes will be all the rage for fall fashion 2013!

Kate has such classic style:

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LONDON, ENGLAND - SEPTEMBER 12: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend the Tusk Conservation Awards at The Royal Society on September 12, 2013 in London, England. (Photo by Danny E. Martindale/Getty Images)

LONDON, ENGLAND - SEPTEMBER 12: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Tusk Conservation Awards at The Royal Society on September 12, 2013 in London, England. (Photo by Danny E. Martindale/Getty Images)

LONDON, ENGLAND - SEPTEMBER 12: Catherine, Duchess of Cambridge attends the Tusk Conservation Awards at The Royal Society on September 12, 2013 in London, England. (Photo by Danny E. Martindale/Getty Images)

LONDON, ENGLAND - SEPTEMBER 12: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Tusk Conservation Awards at The Royal Society on September 12, 2013 in London, England. (Photo by Danny E. Martindale/Getty Images)

LONDON, ENGLAND - SEPTEMBER 12: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Tusk Conservation Awards at The Royal Society on September 12, 2013 in London, England. (Photo by Danny E. Martindale/Getty Images)

LONDON, ENGLAND - SEPTEMBER 12: Catherine, Duchess of Cambridge attends the Tusk Conservation Awards at The Royal Society on September 12, 2013 in London, England. (Photo by Danny E. Martindale/Getty Images)

AYRSHIRE, UNITED KINGDOM- MARCH 05: Catherine, Duchess of Cambridge, known as the Countess of Strathearn when in Scotland during a visit to Dumfries House on March 05, 2013 in Ayrshire, Scotland. The Duke and Duchess of Cambridge braved the bitter cold to attend the opening of an outdoor centre in Scotland today. The couple joined the Prince of Wales at Dumfries House in Ayrshire where Charles has led a regeneration project since 2007. Hundreds of locals and 600 members of youth groups including the Girl Guides and Scouts turned out for the official opening of the Tamar Manoukin Outdoor Centre. (Photo by Danny Lawson - WPA Pool/Getty Images)

CHARLOTTETOWN, PE - JULY 04: Catherine, Duchess of Cambridge looks on as Prince William, Duke of Cambridge takes part in helicopter manouvres called 'water birding' across Dalvay lake on July 4, 2011 in Charlottetown, Canada. The newly married Royal Couple are on the fifth day of their first joint overseas tour. The 12 day visit to North America is taking in some of the more remote areas of the country such as Prince Edward Island, Yellowknife and Calgary. The Royal couple started off their tour by joining millions of Canadians in taking part in Canada Day celebrations which mark Canada's 144th Birthday. (Photo by Arthur Edwards - Pool/Getty Images)

CHELTENHAM, ENGLAND - MARCH 14: Kate Middleton, girlfriend of Prince William, arrives at Cheltenham Racecourse on March 14, 2008, in Cheltenham, England. Today was the fourth day of The Annual National Hunt Festival held at the Gloucestershire track. (Photo by Getty Images/Getty Images)